Improvement in injectors



UNITED STATES PATENT OEEIeEo PETERC. HEINZ, OF FUNKVILLE, PENNSYLVANIA.

IMPROVEMENT IN INJECTORS.

Specification forming part of Letters Patent No. 59,602, dated November13, 1866.

To all whom it may concern:

Be it known that I, PETER C. HEINZ, of Funkville, county of Venango andState of Pennsylvania, have invented a Gas-Injector forgas-burningfurnaces; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings, making a part of this specification, in which-Figure I is a longitudinal section of my improved instrument, and Fig.II is a perspective View of same, showing its connection to asteam-boiler.

The object of this invention is to utilize as fuel the imflammable gaseswhich flow from oil-wells.

Its nature consists in the application of a steam-injector at the end ofthe gas-supply pipe, by which the gas is drawn from the reservoir orwell and injectedpinto the furnace, the injector being an effectualcheck to the fire passing back into the gas-pipe and causing` anexplosion.

Letters of like name and kind refer to like Vparts in each of thefigures.

A represents the gas-supply pipe, leading from the Well or gas-reservoirto the furnace.

B represents the injector-nozzle, which is applied to the end of thegas-pipe (standing at right angles thereto) and is inserted into thefurnace, as shown in Fig. II.

O represents the steam-pipe, which passes centrally into the nozzle B,its orifice being so much contracted as to give a high velocity to thesteam issuing therefrom, which steam, in its passage through the nozzleB, draws the gas from the gas-pipe behind it and injects the same intothe furnace.

While the injector is in operation it is manifestlyvimpossible for thegas in the pipe to take fire from the fla'me in the furnace; but whenthe steam is shut off from the injector this might occur were the supplyof gas not shut off at the same time. To effect this the nozzle B isenlarged, as shown at B', and a valve-seat formed therein, as shown atD, to which is fitted a valve, D', the stein E of which is forlned by asmall tube, an extension of the steam-pipe. The stem E passes into acylinder, F, screwed into the nozzle, as shown at f1, and has a hollowpiston-head, E', at its end which nicely ts said cylinder F.

The cylinder F is enlarged above the piston, as shown at f2, and thepiston has lateral openings e2 e2, so that when steam is admittedthrough the steam-pipe its pressure will force up the piston until itsopenings e2 reach the enlargement f2, and allow it to escape past thepiston and into the valve-stem E through slits or openings e3 in thesides thereof. The rising of the piston E, which admits steam into thenozzle B, also raises the Valve D and permits the entrance of gas fromthe pipe A.

When the steam is shut off a spring, G, coiled around the stern E seatsthe valve D and shuts off the supply of gas.

By these means the admission of gas follows the admission of steam tothe injector, and the shutting off of the steam involves the immediatestoppage of the gas-supply, so that yall danger of explosion isovercome.

Heretoforev` the gas has been fed into the furnace by pressure simply,and many eXplosions and accidents have occurred by the gas in the pipestaking iire and communicating the same to the reservoirs.

I have contemplated the use ofa stop'cock in the supply-pipe A, to beunder the control of the engineer, which, by great care upon his part toshut off the supply of gas before the steam is shut oft', would obviatethe necessity ofthe valve D.

Having thus described my invention, what I claim, and desire to secureby Letters Patent,

l. A gas-injector for furnaces, constructed and operating in the mannersubstantially as herein set forth.

2. The valve D', in combination with the steam-pipe E and gas-supplypipe A for the purpose and substantially as described.

I. C. HEINZ.

Witnesses:

W. H. FonBUsH, GEO. W. WALLACE.

